143132231 has 24 divisors (see below), whose sum is σ = 168058800. Its totient is φ = 121383680.

The previous prime is 143132221. The next prime is 143132233. The reversal of 143132231 is 132231341.

It is not a de Polignac number, because 143132231 - 2¹⁸ = 142870087 is a prime.

It is a super-2 number, since 2×143132231² = 40973671102074722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143132233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 306260 + ... + 306726.

It is an arithmetic number, because the mean of its divisors is an integer number (7002450).

Almost surely, 2^143132231 is an apocalyptic number.

143132231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

143132231 is a deficient number, since it is larger than the sum of its proper divisors (24926569).

143132231 is a wasteful number, since it uses less digits than its factorization.

143132231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 644 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 143132231 is about 11963.7883214306. The cubic root of 143132231 is about 523.0932872991.

Adding to 143132231 its reverse (132231341), we get a palindrome (275363572).

The spelling of 143132231 in words is "one hundred forty-three million, one hundred thirty-two thousand, two hundred thirty-one".